NTHU professor Jou has been researching the hazards of blue light for many years, warning us against the hazards of modern lighting and focusing on OLED lighting as the technology that enables low blue-light emission lighting.
In 2010 Universal Display announced a new AMOLED display architecture called RGB1B2 that uses two blue sub-pixels - a fluorescent deep-blue and a phosphorescent light blue. The introduction of a light blue sub-pixel can significantly extend the operational lifetime of an OLED display and reduce the display's power consumption by as much as 33%.
The RGB1B2 was never adopted (one of the reasons is that adding another sub pixel complicates the TFT backplane and has other disadvantages - but the architecture is now again on the table and UDC presented it again at OLED Korea 2019.
In June 2018 Kyulux and Wisechip unveiled a PMOLED display that uses Kyulux’s Hyperfluorescence yellow emitter. Kyulux updated today that Wisechip is now ready to start producing the HF panel and is seeking customers.
Wisechip eventually settled on a large panel - 73.00 x 41.86 mm (2.7") with a resolution of 128x64. Wisechip says that the power consumption of its HF display is almost half of its regular fluorescent yellow PMOLED.
Professor Homas Teets from the University of Houston has been awarded a $589,000 National Science Foundation (NSF) CAREER Award to explore new synthetic strategies for producing photoactive organometallic compounds.
Specifically, Teets will use the award in three research areas - efficient and long-lasting blue OLEd emitters, near-infrared (NIR) emitting compounds and photocatalysts for organic synthesis capable of light-induced electron transfer. The grant will also fund educational projects aimed at children from kindergarten through high school.
In 2014 we reported that the Tai-Yah (also called Atayal) tribe, the "dark tribe", has started to test National Tsing-Hua University's blue-free OLED lighting panels (produced by WiseChip).
These early candle-light street OLEDs were not suitable for that environment, and NTHU researchers say that mountain dew rapidly shorted the wires. But not NTHU has stepped up its efforts and teamed up with First-o-Lite to produce a new version of its panels. This time the researchers are positive that its new panels will enable the entire village to adopt blue-hazard free lighting,
At the OLED Korea conference, both Merck and Sumitomo detailed their latest OLED inkjet material performance.
The first day of the OLED Korea 2019 conference is almost over - with some interesting lectures and talks by leading OLED companies and professionals. Here are some of the things under discussion today (highlights only):
- Some believe there will be a real market for >$2,000 foldable OLED devices, and some call for cost reductions before real adoption could take place
- LG Display is optimistic regarding the future of OLED TVs
- Samsung will not commit yet to its QD-OLED technology
- Both Cynora and Kyulux are rapidly progressing towards a long lasting TADF/HF blue - but it seems there's still work to be done
- Idemitsu Kosan is increasing its fluorescent OLED emitter efficiency
- Universal Display's RGBB architecture is back on the table - and the company now highlights the architecture's low blue light emission. UDC seems more optimistic then ever regarding blue PHOLED commercialization
- Equipment maker's focus is shifting to China as Korean OLED makers will not increase capacity in the near future
Exposure to blue light has been linked to many health issues - and one of the advantages of OLED displays and lighting panels has always been lower blue light emission compared to LED based technologies.
Samsung recently announced its latest AMOLED displays (adopted in the Galaxy S10 family of smartphones), and the company now says that its newest OLEDs produces considerably less blue-light emissions than any other mobile display in use today. Samsung's blue-light-eradicating advancement has just been certified by world-class German testing and certification body, TÜV Rheinland, which awarded Samsung's AMOLEDs its ‘Eye Comfort’ certification.
Universal Display reported its financial results for Q4 2018 - with revenues of $70.1 million and a net income of $19.2 million. UDC increased its quarterly dividend to $0.1 per share, and expects its 2019 revenues to be in the range of $325 to $350 million.
UDC recently adopted a new accounting standard (ASC 606) which lowers its revenue and income in the early stage of each royalty and material sales contact.
USC researchers develop copper-based OLED emitters that could pave the way to an efficient long-lasting blue OLED
Researchers from the University of Southern California (USC) led by Mark E. Thompson (who was the first to report on efficient phosphorescent OLEDs, later commercialized at UDC) developed a new copper-based phosphorescent OLED emitter compound, that could have several advantages to the currently-used iridium compounds.
The researchers say that copper-based emitters could be cheaper (as iridium is an expensive and rare element) - but more importantly could be the key to develop an efficient and long-lasting blue OLED emitter.